Because Roxy wasn't/isn't my favorite FZ album for reasons even I don't really know how to put into words, I haven't gone back and been through the record... These are different 'takes'? At least some sound the same to me, like the intro to 'Penguin in Bondage'.
Anyhow, I enjoyed it more as a concert film, maybe because the show had so much of a visual component esp towards the end... Made more sense being able to see it.
As for being weird, this was the 70s after all... FZ had to keep a venue full of stoned college age people entertained somehow. Or as he would have put it, AAAFNRAA.
I was lucky enough to have seen him live three times. I miss the hell outta Zappa.